Aromatic copolyaide from diamino benzanilide

Details Aromatic copolyaide from diamino benzanilide Aromatic copolyaide from diamino benzanilide

1992-06-29

1993-11-30

Anderson, Harold D.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528183, 528190, 528191, 528310, 5283291, 528331, 528340, 528344, C08G 6912, C08G 6932

Patent

active

052666727

ABSTRACT:
Aromatic copolyamides are described which are soluble in organic polyamide solvents and which essentially consist of the recurring structural units of the formulae Ia, Ib and Ic ##STR1## wherein R.sup.1 and R.sup.4 are divalent aromatic radicals, the valency bonds of which are in the para position or in a comparable coaxial or parallel position relative to one another, R.sup.2 is a radical of the formula III ##STR2## and R.sup.3 is a radical of the formula IV ##STR3## The mole fractions of the individual structural features in the copolyamides are fixed within selected limits. Fibers composed of the copolyamides claimed are distinguished by a high stretchability.

REFERENCES:
patent: 3869429 (1975-03-01), Blades
patent: 4075172 (1978-02-01), Ozawa et al.
patent: 4413114 (1983-11-01), Shimada et al.
patent: 4507467 (1985-03-01), Shimada et al.
patent: 4987216 (1991-01-01), Keil et al.

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